ath9k: initialize hw prior to debugfs
debugfs uses the hardware for several debugfs files as such the
hardware must be initialized and available prior to its usage. The
same applies to when we free the hw structs -- free debufs file
entries prior to free'ing the hardware.
Reported-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 692fd1d..cab17c6 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -999,6 +999,8 @@
ath9k_init_nfcal_hist_buffer(ah);
+ common->state = ATH_HW_INITIALIZED;
+
return 0;
}
@@ -1239,11 +1241,18 @@
void ath9k_hw_detach(struct ath_hw *ah)
{
+ struct ath_common *common = ath9k_hw_common(ah);
+
+ if (common->state <= ATH_HW_INITIALIZED)
+ goto free_hw;
+
if (!AR_SREV_9100(ah))
ath9k_hw_ani_disable(ah);
- ath9k_hw_rf_free(ah);
ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
+
+free_hw:
+ ath9k_hw_rf_free(ah);
kfree(ah);
ah = NULL;
}